Image copyrightEssex PoliceImage caption
Keeley Barnard was sharing a sofa bed with her mother when she strangled her

An alcoholic who threatened her husband with a knife "posed no risk" to her mother, who she later killed in "rage and frustration", a report has found.

Keeley Barnard strangled 70-year-old Margaret Sims, who had Alzheimer's, with such force a bone was broken in her throat.

Opportunities were missed to assess the risk Barnard, 53, posed to her mother, a Domestic Homicide Review has found.

But it said her issues had "no direct impact on the eventual homicide".

Barnard, from Chelmsford, was jailed for life in February 2018.

The review, published by the Tendring Community Safety Partnership, found she had a history of alcohol-fuelled violence towards her husband and adult son, with the police attending their home on four occasions between 2011 and 2017.

Image copyrightBPM MediaImage caption
Essex Police described Margaret Sims as a "vulnerable elderly lady who was unable to defend herself"

One incident in which she threatened her husband with a knife "should have been initially graded as high risk", the review said.

Grading the risk would have alerted other agencies to provide family support and represented a "missed opportunity".

Described as "a high-functioning alcoholic", Barnard had twice overdosed on antidepressant medication, the report said, and had threatened to kill herself in 2017 after "feeling at crisis point".

She had been "physically violent and verbally abusive" towards her husband - but the review found there was no evidence Barnard "posed any risk to her mother" and her issues had "no direct impact on the eventual homicide".